TEAS Math: Numbers and Operations 4 — Questions and Answers
Question 1: A patient needs 2.5 mg of medication per kilogram of body weight. If the patient weighs 68 kg, how many milligrams are needed?
- 150 mg
- 165 mg
- 170 mg (Correct answer)
- 175 mg
Correct answer: 170 mg
Multiply 2.5 mg/kg × 68 kg = 170 mg.
Question 2: Which of the following is equivalent to 3/8 expressed as a decimal?
- 0.325
- 0.375 (Correct answer)
- 0.385
- 0.425
Correct answer: 0.375
3 ÷ 8 = 0.375.
Question 3: A store sells juice in 32 fl oz bottles for $2.56 and in 20 fl oz bottles for $1.80. Which is the better unit price?
- 32 fl oz bottle at $0.08/oz (Correct answer)
- 20 fl oz bottle at $0.08/oz
- 32 fl oz bottle at $0.09/oz
- Both have the same unit price
Correct answer: 32 fl oz bottle at $0.08/oz
$2.56 ÷ 32 = $0.08/oz, versus $1.80 ÷ 20 = $0.09/oz, so the 32 oz bottle is cheaper per ounce.
Question 4: What is the value of 4³ − √64?
- 52
- 56 (Correct answer)
- 58
- 60
Correct answer: 56
4³ = 64 and √64 = 8, so 64 − 8 = 56.
Question 5: A recipe calls for 3¼ cups of flour. If you want to make 1.5 times the recipe, how many cups of flour do you need?
- 4¼ cups
- 4½ cups
- 4¾ cups
- 4⅞ cups (Correct answer)
Correct answer: 4⅞ cups
3.25 × 1.5 = 4.875 cups, which equals 4⅞ cups.
Question 6: If a number is increased by 40% and then decreased by 40%, what is the net percentage change?
- 0% change
- −4% decrease
- −16% decrease (Correct answer)
- −20% decrease
Correct answer: −16% decrease
Multiplying by 1.40 then 0.60 gives 0.84, which is a 16% decrease from the original.
Question 7: Which set of numbers is ordered from least to greatest?
- −3, −1, 0, 2, −4
- −4, −3, −1, 0, 2 (Correct answer)
- −1, −3, −4, 0, 2
- 0, −1, −3, −4, 2
Correct answer: −4, −3, −1, 0, 2
On a number line, −4 < −3 < −1 < 0 < 2.
TEAS Math: Numbers and Operations 4
A patient needs 2.5 mg of medication per kilogram of body weight.
If the patient weighs 68 kg, how many milligrams are needed?